Suction Holder Tube Bellows Guide Tube Support

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Solution Overview

Problem

The existing suction holders for ring frames can deform due to suction force, leading to inappropriate shape changes in the bellows, which prevents the ring frame from being lifted and positioned correctly.

Innovation Solution

A suction holder with a tube bellows and a hollow cylindrical tube inside, where the tube's upper end is positioned lower than the sucker's upper end, creating a negative pressure state to hold the ring frame and preventing deformation by supporting the bellows with the tube, allowing for appropriate lifting and positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the ring frame is sucked and held using a suction holder with tube bellows, then the ring frame can be held securely even with slight distortion, but the bellows may be recessed by suction force and remain deformed, preventing proper lifting

Engineering Contradiction:

Improveholding capabilityVSAvoidbellows shape

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

A guide tube is nested inside the tube bellows to provide structural support. The guide tube prevents the bellows from being excessively recessed by suction force while allowing the bellows to maintain flexibility for holding distorted ring frames. This nested structure resolves the contradiction by providing internal support without sacrificing the bellows' adaptive capability.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Adaptability or versatility

If the bellows is allowed to recess freely to accommodate distortion, then the ring frame can be held despite distortion, but the bellows height changes and disables subsequent lifting operations

Engineering Contradiction:

Improvedistortion accommodationVSAvoidlifting capability

Core Design Contradiction:

Adaptability or versatilityVSDuration of action of moving object

Solution Approach 1:

The guide tube nested within the bellows provides a reference structure that limits excessive recession while allowing controlled deformation. This enables the bellows to adapt to ring frame distortion during positioning, yet recover its shape for subsequent lifting operations, thus maintaining both adaptability and operational duration.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The bellows is designed to temporarily deform (discard its original shape) to accommodate the ring frame during positioning, then recover its original shape through the guide tube's support structure to enable subsequent lifting operations. This cyclic deformation and recovery resolves the contradiction between adaptability and duration of action.

Inventive Principle:

Principle #34Discarding and recovering

3Reliability

If multiple suckers are used to hold the ring frame, then the ring frame can be securely held, but the suckers may reach different heights due to bellows deformation, causing positioning errors

Engineering Contradiction:

Improveholding securityVSAvoidpositioning accuracy

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The guide tube nested inside each bellows serves as a height reference structure. Even when bellows deform to accommodate ring frame distortion, the guide tubes maintain consistent heights, ensuring that multiple suckers remain at equal levels for accurate positioning. This resolves the contradiction between secure holding and positioning precision.

Inventive Principle:

Principle #7Nested doll (Nesting)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration maintains equal heights of the suckers, enabling proper lifting and positioning of the ring frame, ensuring accurate alignment and secure holding.

Implementation Method 1

An inside of the tube bellows is placed, in a state in which the ring frame is in contact with the upper end of the sucker, into a negative pressure state, so that the sucker holds the ring frame thereon

Methodology Applied

Scientific EffectNegative pressure state: Vacuum

Implementation Method 2

a pressure difference is generated between a pressure applied to the inside of the tube bellows and an atmospheric pressure outside the tube bellows to cause the tube bellows to be contracted by the atmospheric pressure until the tube bellows is accommodated into the recessed portion

Methodology Applied

Scientific EffectPressure difference: Pressure Gradient

Data Source

PatentUS11538712B2Suction holder and holding mechanism for ring frame

Publication Date: 2022.12.27 DISCO CORP

AI summary

A suction holder for sucking and holding a holding target member includes a sucker, a tube bellows connected to a lower end of the sucker, and a tube arranged inside the tube bellows and having an upper end positioned lower than an upper end of the sucker. A lower opening of the tube is communicated with a suction source and the holding target member is contacted with the upper end of the sucker to form a closed room, and the inside of the closed room is placed into a negative pressure state to hold the holding target member.